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| Number | Title | Issue Date |
| 7374816 | Prefabricated membrane based on modified polyurethane bituminous binder and process for production The present invention has for its object a prefabricated sealing membrane formed by a support, coated on at least one surface, and preferably impregnated throughout, with a modified bitumen base composition, characterized in that the thermoplastic bituminous composi... | 05/20/2008 |
| 7341624 | Asphalt compositions and the preparation thereof Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVEâ... | 03/11/2008 |
| 7275890 | Cold in-place recycling of bituminous material A method of reconstructing a road is provided. This method includes taking representative cores of the road, analyzing the cores, selecting a substantially solvent-free emulsion based on climate history, mixing the emulsion and reclaimed asphalt pavement particles t... | 10/02/2007 |
| 7189275 | Permeable composition, controlled release product and methods for the production thereof A permeable composition, a controlled release product, and methods for producing the permeable composition and controlled release product. The permeable composition includes a matrix material, a particulate filler material, and interfacial passageways between the ma... | 03/13/2007 |
| 7150785 | High performance asphalt using alkyl aromatic sulfonic acid asphaltene dispersants Disclosed is a high performance asphalt comprising a mixture of low to moderate performance asphalt with linear or branch chain alkyl substituted aromatic sulfonic acid. The high performance asphalt is made by mixing the low to moderate performance asphalt with 1 to... | 12/19/2006 |
| 7001453 | Method of selecting a high modulus layer binder A method of selecting an asphalt binder for use in constructing a high modulus layer of bituminous pavement is provided. This method includes measuring the complex shear modulus of one or more binders at a temperature of not more than about 30° C., measuring the cr... | 02/21/2006 |
| 6863724 | Sulfur additives for paving binders and manufacturing methods Sulfur, useable in as an additive to asphalt in the preparation of asphalt binders can be plasticized by addition of carbon and further treated with amyl acetate. This plasticized sulfur can be formed into solid particles and then added to asphalt as either a minori... | 03/08/2005 |
| 6824600 | Paving binders and manufacturing methods Solid, low-cost paving binder prepared by admixing sulfur, paving grade asphalt (AC) asphalt, and a siliceous filler such as fly ash and silica material, and solidifying the product into preferably flaked, pellet or pastille forms. Carbon black is another possible i... | 11/30/2004 |
| 6817152 | Fiber mats for materials of construction having improved tear strength and process for making same The invention relates to a coated fiber mat of improved tear strength upon dividing pieces of the coated mat and the coating which comprises a cured, non-woven, fiber glass mat containing a polysiloxane wherein the fibers are fixedly distributed in a formaldehyde ty... | 11/16/2004 |
| 6802897 | Biodiesel sulfur slurry A slurry mixture of sulfur in a liquid carrier comprising an ester derived from vegetable oils or animals fats such as biodiesel is disclosed. Also disclosed is a method of preparing a mixture of asphalt, polymer and sulfur comprising blending together, at asphalt b... | 10/12/2004 |
| 6784301 | Perylene-derivative based crystallization modifiers Perylene derivatives of the general formula I where X and Y are independently oxygen, —NR1 or —NR2; R1 and R2 are independently hydrogen, C1-C... | 08/31/2004 |
| 6730158 | Asphaltic concrete and method of making same A composition of asphaltic concrete and the method of making the same are disclosed. The asphaltic concrete has asphalt cement, sulfuric acid and citrus stripper oil admixed together. This admixture is mixed with some aggregate and then packed and consolidated. The ... | 05/04/2004 |
| 6544911 | Fiber mats for materials of construction having improved tear strength and process for making same The invention relates to a coated fiber mat of improved tear strength upon dividing pieces of the coated mat and the coating which comprises a cured, non-woven, fiber glass mat containing a polysiloxane wherein the fibers are fixedly distributed in a form... | 04/08/2003 |
| 6444731 | Modified asphalt A method for manufacturing modified asphalt is characterized by adding a dispersion agent such as furfural or vegetable oil to a modifier material and then mixing the modifier material with asphalt. The dispersion agent facilitates dispersion of the modif... | 09/03/2002 |
| 6440205 | Paving binders and manufacturing methods Solid, low-cost paving binder prepared by admixing sulfur, paving grade asphalt (AC) asphalt, and a siliceous filler such as fly ash and silica material, and solidifying the product into preferably flaked, pellet or pastille forms. The solid paving binder... | 08/27/2002 |
| 6258877 | Method of producing molded products from stripped roofing material A method of converting stripped roofing material into a useful product comprising feeding roofing material removed during repair or reroofing of a building roof into a shredder introducing particles of material from said shredder together with particles o... | 07/10/2001 |
| 6153004 | Safe sulfur slurry A sulfur in oil in asphalt blend is disclosed. A polymer-free slurry of solid, elemental, sulfur in liquid oil is used to add sulfur to asphalt. Addition of a slurry of solid sulfur in oil, or oil containing sulfur compounds, permits rapid and effective d... | 11/28/2000 |
| 5922124 | Additive for, method of adding thereof and resulting cured cement-type concreations for improved heat and freeze-thaw durability An additive for, a method of adding thereof to uncured mixes for and resulting cured cement-type concreations such as cured embodiments of concrete, marcadam, and roof-top shingles each exhibiting improved heat and freeze-thaw durability resulting from re... | 07/13/1999 |
| 5637141 | Pavement binder and method of making same (LAW441) The present invention provides a method of making storage-stable road paving binders by blending a minor amount of an unsaturated polymer (e.g., having at least one diene monomer) with a major amount of asphalt at an elevated temperature such that the com... | 06/10/1997 |
| 5584920 | Sulphonated hydrocracking residues as concrete admixtures A process is described for preparing a water-soluble sulphonated dispersant from a petroleum hydrocracking residue comprising: contacting a petroleum hydrocracking residue boiling above 524° C. with concentrated sulphuric acid, oleum or sulphur trioxide ... | 12/17/1996 |
| 5306343 | Tagging and identifying asphalt additives A tag is added to an asphalt additive, typically an anti-stripping agent. The additive dye is mixed with other components of an asphalt composition and melt processed at 300° F. (149° C.) or above to produce an asphalt composition. Presence of the tag t... | 04/26/1994 |
| 4387167 | Sulfur-based adducts and compositions A novel sulfur-based adduct formed by reacting sulfur with a diene-containing by-product hydrocarbon mixture available from petrochemical operations and/or from coal processing. The adduct is a reaction product of sulfur and each of the dienes contained i... | 06/07/1983 |
| 4375988 | Bituminous binder, process for its production and use Bituminous binders are disclosed which contain at least one silane and show excellent improvement of adhesion. The bituminous binder containing silane is manufactured by heating The bituminous binder to a temperature of 120°-230° C. and stirring in the ... | 03/08/1983 |
| 4339277 | Solid sulfur-extended asphalt composition and method and apparatus therefor An improved sulfur-extended asphalt composition and method for use in making compacted bituminous concrete, whereby solid sulfur, preferably in powdered form, is added to liquid asphalt on substantially a 1:1 weight basis, the asphalt comprising less than... | 07/13/1982 |
| 4331481 | Acidic asphaltic composition and method The addition of aqueous dilutions of a sulfonic acid source of 0.2% to 0.8% acid concentration to an aggregate or to a composition of asphalt and aggregate in hot asphalt plants enables a decrease in the amount of asphalt required in comparison to composi... | 05/25/1982 |
| 4302255 | Sulfur-based adduct and compositions containing the adduct A novel sulfur-based adduct formed by reacting sulfur with a diene-containing by-product hydrocarbon mixture available from petrochemical operations and/or from coal processing. The adduct is a reaction product of sulfur and each of the dienes contained i... | 11/24/1981 |
| 4256491 | Waterproofing composition and method of making the same A waterproofing composition is made by admixing primary sludge produced by pulp and paper mill operations with tall oil pitch. The composition may include particulate wood by-products as fillers and a material such as lime for raising the softening point ... | 03/17/1981 |
| 4242144 | Bituminous mixed composition and filler for same containing non-hygroscopic crystal water-containing substances Hot processed bituminous mixed composition, particularly for road construction, characterized by containing non-hygroscopic, crystal water-containing substances, that upon heating to the mixing temperature of the mixed bituminous composition will complete... | 12/30/1980 |
| 4225353 | Reinforced sulphur-asphalt composites of two continuous phases A sulfur-bituminous composite binder material consisting essentially of 60-75% by weight sulfur and 25-40% by weight bituminous material. Optionally a small amount of a fibrous or flake reinforcing material and usually a filler material can be added. The ... | 09/30/1980 |
| 4154619 | Sulphur-bituminous compositions A small amount of an organosiloxane polymer stabilizes an emulsion of sulphur and a bituminous material in which the bituminous material is a continuous phase and the sulphur is a dispersed phase; the stabilized emulsion serves as a binder for mineral agg... | 05/15/1979 |
| 4130516 | High ductility asphalt An asphalt composition having high ductility at low temperatures is obtained by hot-mixing asphalt and 3 to 7 wt. % of sulfur, based on the weight of asphalt, at temperatures below 300° F. Small amounts of rubber further increase the ductility.... | 12/19/1978 |
| 4126482 | Thiol polyesters New polythiols-polyesters and corresponding polysulphides in the --SH group wherein sulphur is contained in the alcohol residue after the formation of esters. These polyesters are derived from aliphatic polyacids, saturated or not, wherein the molecule co... | 11/21/1978 |
| 3997355 | Sulfur composition A sulfur-based aggregate-asphalt composition prepared by a process comprising mixing aggregate with asphalt and a molten sulfur system, wherein the molten sulfur system is made by a method comprising heating a mixture of sulfur and a sulfur plasticizer. D... | 12/14/1976 |
| 3992340 | Vulcanized molding compositions based on bitumen and olefin polymers Vulcanized compositions of matter obtained by heating a mixture of bitumen, an olefin polymer, sulfur and a sulfur-containing vulcanization accelerator to a temperature of 80° to 250° C.... | 11/16/1976 |
| 3960585 | Reducing H2 S-emission from hot cast sulfur-asphalt mixtures When cast sulfur-asphalt compositions, e.g., sulfur-asphalt-aggregate pavements and construction articles, are being prepared by mixing and/or heating mixtures comprising sulfur and asphalt at elevated temperatures not exceeding 175°C, the evolution of h... | 06/01/1976 |